Toy building block



FIG. 1 is a front view of a toy building block of the present invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a cross-sectional view in the direction indicated by thearrows 8-8 of the toy building block of FIG. 1.

The broken lines are for the purpose of illustrating portions of thearticle that form no part of the claim.

CLAIM The ornamental design for a toy building block, as shown anddescribed.